METHOD AND SYSTEM FOR IMPROVING QUALITY OF LOW-QUALITY OIL Russian patent published in 2021 - IPC C10G67/00 C10G21/00 C10G67/02 B01D11/04 B01D3/06 

FIELD: oil industry.

SUBSTANCE: invention relates to a method and system for improving the quality of low-quality oil. The method for improving the quality of low-quality oil provides for following stages: (1) subjecting low-quality oil, used as raw material for the quality improvement process, to a conversion reaction in the presence of hydrogen to obtain a conversion product, (2) processing the conversion product to obtain the first processed product, wherein the first processed product contains from 20 wt. % to 60 wt. % per the total weight of the first processed product of a component with a boiling point or boiling point range from 350°C to 524°C, and (3) subjecting the first processed product to extraction separation to obtain oil of improved quality and pitch.

EFFECT: quality improvement method and the quality improvement system have advantages of stable operation, high efficiency of the quality improvement process, environmental friendliness, low coke yield or high oil yield of improved quality.

20 cl, 4 dwg, 13 tbl, 21 ex